Means for supplying explosive mixtures to engines



J. J. COCHRAN. MEANS FOR SUPPLYING EXPLOSIVE MIXTURES T0 ENGINES.

Y APPLICATION FILED DEC. 13, 1918. 1,353,454

PatentedSept-Zl, 1920.

7,9 I a. o

WITNESS.

' any JOHN J. COCHBAN, OF ST. LOUIS, MISSOURI, ASSIGNOR TO MARTIN-LUMAGHI MANU- FACTURIN G COMPANY, OF ST. LOUIS, MISSOURI, A CORPORATION OF MISSOURI.

MEANS FOR SUPPLYING EXPLOSIVE MIXTURES T0 ENGINES.

Specification of Letters Patent. Patented Sept. 21, 1920.

Application filed December 13, 1918. Serial 116. 266,638.

To all whom it may concern:

' Be it known that I, JOHN J. CooHRAN, a citizen of the United States of America, a resident of the city of St. Louis, in the State of Missouri, have invented certain new and useful Improvements in Means for Supplying Explosive Mixtures to Engines, of which the following is a full, clear, and exact description, reference being had to the accompanying drawings, forming a part of this specification.

My invention relates to a means for supplying explosive mixture to internal combustion engines and through the medium of which I provide for the delivery of the explosive mixture in a purely vaporous or gaseous form, the said means providing against the delivery of liquid hydrocarbons to the intake leading from the carbureter to the engine cylinders. My explosive mixture supply means further provides for a-cornplete mixture of hydrocarbon vapors and air, and the delivery of such mixture in a uniform condition to the engine cylinders. The means provides further for the delivery of lubricant fumes from the crank case of the engine to the engine cylinders to lubricate the wallsof the cylinders and the pistons operable therein, with the result of increasing the efliciency and smoothness of operation of the engine.

Figure I is a side elevation of part of an internal combustion engine, including the carbureter and intake pipe leading therefrom and my supplying means.

Fig. II is an enlarged cross section taken enline IIII, Fig. I. q

III is an enlar ed sidev elevation, partly in section, of a ragment of a carbureter, the intake pipe leading therefrom and the parts of my fuel suppl 'ng means directly associated with said car ureter and intake pipe.

In the drawings, A designates a carbureter and B an intake pipe leading to the cylinders of an internal combustion engine. 0 designates a part of the engine through which access is gained to the enginecrank case, and which may be either a door, as shown, controlling the opening into the chamber containing the valve lift rods, or other suitable part of the engine through which communication is ained to the crank case. The carbureter is 1'0- vided with the usual throttle lever D. he

parts thus far described are common to internal combustion engines in general, and no invention for said parts, per se, is herein claimed.

l designates a tubular body interposed between the carbureter A and intake pipe B and having airtight connection with said members. This'body is provided with an aperture 2 providing communication between the carbureter and the intake pipe, and through which the mixture to supply the cylinders of the engine is drawn. cross piece 3, spanning the aperture in the body 1, serves to support an arbor 4 located centrally of said aperture and extending longitudinally thereof. A fan wheel 5 rotatably mounted on said arbor has blades extending into proximity with the wall of the aperture 2, the blades bein arranged obliquely relative to the axis 0 the fan wheel.

When an internal combustion engine equipped with the parts thus far described is in use, the suction in the intake pipe B acts to rotate the fan wheel 5 and said fan wheel, due to the shape of its blades, serves bureter therewith, and acts to restrain the liquid in the-hydrocarbons from entering the intake pipe. Consequently, the" mixture which passes through the intake pipe is one composed of hydrocarbon vapors. and air only, and is one susceptible of more com-- plete combustion when it enters the engine cylinders and by which the engine may be more perfectly operated than it can be where the mixture is in a liquid or partially liquid state.

' 6 designates a pipe providing communication between the crank case of the internal combustion engine and the aperture 2 in the tubular body 1. During the operation of the engine, the fumes constantly present int-the crank case are drawn therefrom through the pipe 6 and on entering the tubular body 2 pass therefrom through the intake pipe 4 to the engine cylinders. These fumes carry a certain amount of lubricant and they therefore, upon entering the engine cylinders, serve to lubricate the cylinder walls and the pistons. The pipe 6 contains a valve '7 provided with a lever, 8.. Said lever is joined by a connecting rod 9 to the throttle ice lever D, so that the valve 7 may be opened in response to movement of said throttle lever. The valve 7 is intended to occupy a closed position when the throttle is closed and is moved toan open position as the throttle is opened, so that the fumes from the crank case will be drawn therefrom and delivered to the engine cylinders while the en 'ne is in full operation.

i check valve 10 in the tubular body 2 is normally closed but is adapted to open to.

supply additional air fromthe atmosphere to theaperture 2, and the intake pipe 4, whenever the' explosive mixture becomes abnormally rich due to the delivery of. a sur plus of hydrocarbon vapor.

The herein described means for supplying explosive mixture or fuel to internal combustion engines provides for the delivery a of a more perfect explosive mixture due to the thorough mixing operation and the retardation of the liquid hydrocarbons. It therefore enables the engine to furnish an increase of power with better combustion, and with a lessening of the amount of carbon produced. Due to the more perfect mixture the engine may be started more easily, and due to the connection between the crank case and the portion of the means associated with the carbureter and intake pipe, the cylinder walls and piston are so lubricated as to increase the smoothness of running of the engine and lessen friction.

I claim:

The combination with an internal combustion engine having a crank case, an intake pipe for explosive mixture, and a carbureter provided with a throttle, of a connecting pipe leading from said crank case to said intake pipe, a valve in said connecting pipe, and means connecting said valve to said throttle whereby said valve may be operated upon operation of said throttle.

In testimony that I claim the foregoing I hereunto aflix my si nature.

J- O. J. OOCHRAN. 

